[Sugar-devel] "Cannot find root file system!" with 2009-06-03 SoaS on XO-1

[Sean DALY]

identical message when trying to boot a Mac Mini:
http://lists.sugarlabs.org/archive/sugar-devel/2009-May/014519.html

a friend counselled me recently to "create a symlink to the ramdisk",
but I'm not sure how to do that.

Sean


On Sat, Jun 13, 2009 at 8:38 AM, S Page<skierpage at gmail.com> wrote:
> I made a live USB for my XO-1 in Kubuntu 9.04.  I downloaded
> http://people.sugarlabs.org/sdz/livecd-iso-to-disk.sh and the current
> SoaS-2 snapshot. I installed the package dependencies.  I synthesized
> the overlapping instructions in
> http://wiki.sugarlabs.org/go/Sugar_on_a_Stick/Linux and
> http://wiki.sugarlabs.org/go/Sugar_on_a_Stick/Installation/OLPC (the
> latter only documents Fedora) , using commands like
>
> sudo ./livecd-iso-to-disk.sh --overlay-size-mb 300 --home-size-mb 160
> --unencrypted-home Soas2-200906031834.iso /dev/sdc1
> sudo ./livecd-iso-to-disk.sh --overlay-size-mb 300  --unencrypted-home
> --noverify --skipcopy --xo --xo-no-home Soas2-200906031834.iso
> /dev/sdc1
>
> I inserted this in my unlocked XO-1 running q2e41 firmware, and got:
>
> ...
> starting udev4
> creating devices
>
> ------------------------
> WARNING: cannot find root file system!
> ------------------------
>
> Create symlink /dev/root and then exit this shell to continue
> the boot sequence.
>
> bash: no job control in this shell
> bash-4-0#
>
> scsi 0:0:0:0: Direct-Access   SanDisk   Cruzer Pattern 7.01 PQ: 0 ANSI: 0 CCS
> sd 0:0:0:0: [sda] (disk size stuff...)
> (... more sda mesages)
>
> This rings a bell, I think it happened to me months ago with Rawhide-XO.
> It sounds like http://dev.sugarlabs.org/ticket/421 , marked Closed.  I
> looked through the comments in there and
> https://fedorahosted.org/liveusb-creator/ticket/53 and didn't see
> anything that helped: the overlay UUID matches, reinserting USB and/or
> exiting shell doesn't help, etc.
>
>
> Also, can anyone point to a reasonable explanation of what goes on
> during a LiveUSB boot?  initrd, syslinux.cfg, squash-fs, overlays...
> This stuff clearly isn't bulletproof but is cloaked in obscurity-fu.
>
> Thanks,
> --
> =S Page
>
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